Generator for telephone-calls.



No. 759.836. PATENTED MAY 10. 1904. I E. H. STRAUSS.

GENERATOR FOR TELEPHONE CALLS.

APPLIOATION FILED NOV. 11. 1902.

NO MODEL.

2 SHEETS-SHEET 1 ammliou 4i 7 lwawawa' Guam PATENTED MAY 10, 1904.

I E. H. STRAUSS.

GENERATOR FOR TELEPHONE CALLS.

APPLICATION FILED NOV. l7. 1902.

2 SHBETS-SHEET 2.

N0 MODEL.

m: Noam; PETFHS au wuo'muwn. WASHINGTON, n14:v

UNITED STATES Iatented May 10, 1904.-

PATENT OFFICE.

GENERATOFI FOR TELEPHONE-CALLS.

SPECIFICATION formingpart of Letters Patent No. 759,836, dated May 10, 1904..

Application filed November 1'7, 1902. Serial No. 131,754. (No model.) i

T0 at whom it may concern:

Be it known that I, ERNEs'r HUGO SrRAUss, a citizen of the United States, residing at Chicago, in the county of. Cook and State of Illinois, have invented certain new and useful Improvements in Generators for Telephones; and

' battery-wires and for shunting the current by a common means, to generate the current through an electromagnet, to actuate the armature in connection with such electromagnet, and to otherwise improve the apparatus.

The nature of my invention consists of the sundry combinations of parts, including their construction and arrangement, substantially as hereinafter more fully described, and specilically pointed out by the claims.

It is understood that I do not restrict myself to details either as to construction or arrangement of the parts, as they may be readily changed according to circumstances without departing from the spirit of my invention and said'invention in contact and be protected.

In the accompanying drawings, illustrating the preferred embodiment of my invention, Figure 1 is a view in elevation thereof with parts brokenaway. Fig. 2' is a similar view at right angles to the view-point of Fig. 1.

Fig. 3 is a transverse section of the same. Fig. I is a diagrammatic view showing the parts connected up in circuit.

In carrying into effect my invention I provide what may be termed a yoke or core 1, preferably a casting of soft or Swedish iron or steel, which is an electromagnet and which, with its adjunctive parts, may all be in one piece or a number of pieces. Upon the arms of said yoke or core, preferably near the upper ends, are arranged helices 2, which need be only a few windings of insulated wire connected up with an electric battery 7 disposed or not in the telephone-box, this arrangement constituting the field magnets. Said polarized arms have arranged therebetween at their lower ends a revolving armature 4, said lower end portions ofthe firstnamed being so conformed to arcs of said armature, as at 1 1, as to leave very little airspace, the same forming pole-extension terminals. Said pole-extension terminals are each preferably produced with a horizontal flat portion 1, jointly forming the base of the generator. Said armature has its shaft 4 suitably hung in bearings produced in lateral standards or uprights 5, secured laterally to the pole-extension terminals 43, the ends of said shaft projecting beyond said standards oruprights and one carrying a spur-gear pinion 5, standing a short distance away from the standard at that side, permitting said shaft to be moved manually more or less endwise.

Hung in suitable bearings provided in the upper ends of the uprights or standards 5 is a shaft 6, suitably equipped with an insulated handle or crank 6 and carrying a large spur gear or wheel 6, adapted to mesh with the pinion 5 of the armature-shaft for transmitting motion to thearmature as the handle of the shaft 6 is suitably manipulated. Said shaft 6 has connected thereto by suitable means,'as a collar and set-screw 6 6 spring 6", preferably coiled or f-elicalfwith one end bearing upon one of the standards 5,

normally holding said shaft so that it shall be capable of endwise movement in one direction,

and after the removal of manual pressure The helices 2 are wired or connected up, as"

at 7, with the electric battery 7 and also wired or connected up, as at 7 with contactsprings 8 8, preferably of German silver and suitably insulated from each other and secured to a fibrous strip or block 9 or other piece of insulating material secured to the top of the yoke or core 1, said springs normally being out of contact with each other and then out of circuit. The springs 8 8 are each bent or formed with angular portion 8 8 at its free end, respectively, for their ready engagement one with the other, as in passing a current therethrough, as will be presently disclosed.

Carried by the shaft 6 at one end is a metallic disk or plate 10, having one side normally in contact or engagement with the bent terminals 11 of the portion of a contact-spring 11 whose lower terminal 11" (see Fig. 4) is continuously in contact or engagement with one end of the armature-shaft t", thus providing for establishing the line or talking circuit. Said contact-spring 11 is suitably secured in place upon and insulated, as at 11 from one of the standards or uprights 5, and is also, preferably, of German silver. The opposite or outer surface of the contact disk or plate 10 has applied thereto a piece of mica 1O or other suitable insulating material to directly engage the terminals of the contactsprings 8 8.

If a call comes in from the central station, the circuit will be from binding post B, through wire 8, wire 7*, wire 8 wire 8, to binding-post A. If the bell-subscriber calls, the circuit is from binding-post B, through wire 8, magneto-machine spring 11, wire 8", to binding-post A. Then the machine is operated to send subscribers call, the springs 8 will be brought in contact, closing the circuit of battery 7 through the field-coil of the magneto-machine.

The use of a battery in connection with the yoke, &c., produces a very strong magnet, especially as described for a telephone-generator.

It will be understood that my generator, together with the electromagnet, may be applicable to any telephone or fire-alarm signal employing a permanent generator.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. A telephone-generator, embracinga magnet, an armature arranged within the field of said magnet, normally separated overhanging contact-springs, a sliding and rotating armature-actuating means, and means connecting up the aforesaid parts in electrical circuit, said armature-actuating means adapted to engage one of said contact-springs and to move said contact-spring into contact or engagement with the companion contact-spring.

2. A telephone-generator, embracing a magnet, an armature arranged within the field of said magnet, normally separated overhanging contact-springs, a sliding and rotating armature-actuating means, an additional contactspring adapted to engage said armature-actuating means and said armature, and means connecting up the aforesaid parts in electrical circuit, said zu'mature-actuating means adapted to engage one of said contact-springs and to move said contact-spring into contact or en gagement with the companion contact-spring.

3. A telephone-generator, embracing a magnet, an armature, arranged within the held of said magnet, means for actuating said armature, carrying a disk or plate, contact-s1')rings connected up with said magnet, and adapted to be engaged by said disk or plate, and an additional contact-spring adapted to be engaged bysaid armatureand said disk, or plate, and means connectingup the aforesaid parts in electrical circuit, substantially as described.

4. Atelephone-generator, embracing a magnet, contact-springs connected up with said magnet and having angular or bent end portions adapted to be brought together, an armature, arranged within the hold of said magnet, and means for actuating said armature, ad apt ed to engage the angular or bent portion of one of said contact-springs, and to move the free end of said contact-spring into engagement with the angular or bent portion of the companion contact-spring, substantially as described.

5. A telephone-generator, embracing a magnet, contact-springs connected up with said magnet, and having separated free end terminals, an armature arranged within the held of said magnet, means for actuating said armature, carrying a contact-plate having an insulated surface for engagement with said contact-springs, and an additional contact-spring adapted to engage said armature and the conducting-surface of said contact-plate, and means connecting up the aforesaid parts in electrical circuit, substantially as described.

6. A telephone-generater, embracing a magnet, an armature, means for actuating said armature, and pole extensions for said magnet, having arcuate surfaces coincident with the peripheral outline of said armature and means connecting up the aforesaid parts in electrical circuit, substantially as described.

7. A telephone-generator, embracing a mag net, pole extensions for said magnet, standards or uprights secured laterally to said pole extensions, an armature arranged between said pole extensions, and bearing in said standards, a shaft geared to said armature and also bearing in said standards, and means connecting up the aforesaid parts in electrical circuit, substantially as described.

In testimony whereof I aflix my signaturein presence of two witnesses.

ERNEST HUGO STRAUSS.

Witnesses:

R. A. BURTON, J. NV M. Prrs'rnn. 

